{"answers":{"affected":"2 open source packages ship an affected version, including s2n-quic.","exploited":"There is no known exploitation of CVE-2026-10740 in the wild and no public exploit code.","fix":"Upgrade s2n-quic to 1.82.0 or later.","what":"CVE-2026-10740 is a medium-severity denial of service vulnerability in AWS s2n-quic, published on 10 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-10740 and fix it if it is affected.\n\nWhat it is: CVE-2026-10740 is a medium-severity denial of service vulnerability in AWS s2n-quic, published on 10 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-10740 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- s2n-quic (crates.io): affected all versions; fixed in 1.82.0\n- s2n-quic (crates.io): affected all versions; fixed in 1.82.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-10740/ (Markdown: https://insights.sbomify.com/CVE-2026-10740/index.md)","id":"CVE-2026-10740","markdown":"https://insights.sbomify.com/CVE-2026-10740/index.md","name":"CVE-2026-10740","record":{"aliases":["GHSA-9q54-f358-3fqf"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"QUIC protocol library","requires_auth":"none","summary":"Unauthenticated remote attackers can cause denial of service via excessive memory allocation in the s2n-quic library by sending crafted QUIC Initial packets.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"AMZN","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Unbounded memory allocation in the CRYPTO frame reassembler in s2n-quic before 1.8.2 may allow an unauthenticated remote actor to cause a denial of service (degraded availability) by sending crafted QUIC Initial packets.\n\nTo remediate this issue, users should upgrade to v1.8.2.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Excessive memory allocation in s2n-quic","id":"CVE-2026-10740","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Nexus Repository Manager - Incorrect Authorization allows credential disclosure via proxy repository configuration","id":"CVE-2026-10741"},"packages":[{"ecosystem":"crates.io","fixed":["1.82.0"],"introduced":["0"],"last_affected":[],"package":"s2n-quic","purl":null,"source":"GHSA-9q54-f358-3fqf"},{"ecosystem":"crates.io","fixed":["1.82.0"],"introduced":["0"],"last_affected":[],"package":"s2n-quic","purl":"pkg:cargo/s2n-quic","source":"GHSA-9q54-f358-3fqf"}],"prev":{"headline":"Cato Networks SDP Client for Windows is vulnerable to Local Privilege Escalation","id":"CVE-2026-10739"},"products":["s2n-quic"],"published":"2026-06-10","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-10","vendors":["AWS"]},"summary":"Unauthenticated remote attackers can cause denial of service via excessive memory allocation in the s2n-quic library by sending crafted QUIC Initial packets.","url":"https://insights.sbomify.com/CVE-2026-10740/"}